Artificial tooth



Dec. 9, 1930. F. s. TRUS LER' ARTIFICIAL TOOTH F iled Feb. 2, 1929 3% ANN/1:5: y I

Inucmcr Praia/z ikwiei' By Q Aiibrney Patented Dec. 9, 1930 1 unrrsn STATES FRANK srnusnnn, or vnrm'on, TEXAS ARTIFICIAL roo'rn Application filed February 2, 1929.,v Serial No. 336,969.

characterized by a special design of coupling means between the plate and facing and so made as to provide for more efiicient and'dependable action and to better fulfill the requirements of an assemblage of this class.

The specific features distinguishing the improved coupling will become more readily apparent from the following description and drawings.

In the drawings:

Figure 1 is a group perspective View show ing the backing plate and special coupling members associated therewith.

Figure 2 is a vertical sectional view through the complete tooth showing the members coupled together.

Figure 3 is a view at right angles to Figure 2, the section being taken on the vertical line 3-3 of Figure 2.

Referring now to the drawings by reference numerals, it will be seen that 4 designates a porcelain facing having a. gum shield extension 5 at one end, while the reference character 6 designates the metallic backing plate.

The facing 4 has a verticallv elongated substantially ovate cavity formed therein, which under normal conditions is apt to contain a quantity of cement for holding the female coupling member 8 in place. This member 8 is of peculiar configuration and made of appropriate metal and fashioned to form a two-way socket casing as clearly shown in Figure 1. In other words, this member is so designed as to provide an upin order that it may be embedded in the ceinentfor proper maintenance of the part 8.

In addition, the individual sockets 9 and 10 are formed with segmental lips or flanges 12, functioning as resilient retaining shoulders.- These extend inwardly as shown-in Figure 2. I The male coupling member-.13 is formed integral with the backing plate 6 and said male coupling member comprises an; upper substantially cylindrical portion let adapted to fit in the socket'9 and a lower substantially cylindrical part or portion 15 adapted to fit in the socketlO.

A solid web portion 16 joins the pins. Both pins are formed adjacent their inner ends with outstanding circumferential ribs 17adapted to snapbehind the segmental shoulders 12. In addition, thereis an out standing marginal flange 18, functioning as a spacer when fitted into the socket as'shown inFigure 2. ,With this arrangement suitable space is left between the adjacent surfaces of the parts8 and13 to accommodate a retaining cement and when the parts are assembled as seen in Figure 2, a rigid and dependable type of joint is had. i

From a study of Figure 1, it will be noted that the female coupling member 8 has the upper and lower socket portions provided with horizontal slits 19 to permit expansion and contraction of the socket. It is to be further noted,,that the sockets 9 and 10 in tercommunicate through the medium of a connecting channel 20, and the side walls of the channel 20 are notched as at 21t0 permit of a longitudinal expansion or contrac tion of said female member.

The advantages and features of a joint of this kind will be clear to, persons skilled in the art to which the invention relates after considering the description in conjunction with the drawings. Therefore a more lengthy description is regarded .as unnecessary.

Minor changes in the shape, size, and rearrangement of details coming within the field of invention claimed maybe resorted to, in actual practice, if desired.

I claim:

1. In an artificial tooth structure of the class described, a facing having a cavity adapted to receive an expansible female cou- V plingmember, said female coupling member 7 c comprising upper and lower sockets and a restricted vertical channel between the sock- 5 ets communicating with the sockets,a backingplate cooperable with said facing and havin anv integral male. coupling member I embo yingv upper and lower. substantially cylindricalportions receivable in said sockets and a vertical web connecting said substantially cylindrical portions. receivable in said channel. I v j 2. Inan'artificial tooth structureof the-- class described, a facinghaving a; cavity] adapted to receive ,a female coupling mem- 1 her, said, female coupling member comprisupper andlower. sockets and a vertical channel betweenv the sockets communicating with the sockets, a backingplate cooperable Q, with said facing and having an integral male coupling memberembodying upper andlowei-substantially cylindrical portions receiv able, in said sockets and a vertical web con ,necting' said. substantially cylindrical porfl tions and receivablein said channel, the en trance portionsof said sockets being provided with segmental retaining shoulders, and said male member being provided with an outa 'standingspacer flangeattheforward end a p {a thereof cooperating with the internal surface ofithewallso-f said sockets; and channel;

' f 3, In an artificialtooth structure of ,the

class described, ajfacing having a cavity lined with cement, a .female'coupling member a arranged in 'said cavity "and embodying an elongated body formed into upper and lower spaced communicating resilient retainingsockets and :a channel extending betweenand communicating with said sockets, the entrance portions of said socketsbeing provided with segmental ret'aining'shoulders, and said body having a continuous outstanding anchoring ribembedded in said cement, a backing plate having an joutstanding inl q tegral male coupling member embodying uppeer and lower substantially cylindrical portions and a connecting web merging at its opposite ends into saidcylindrical portions,

I the upper and lower cylindrical portions of a said maleimember adapted to be received in the sockets offlsaid female member and said Web adapted to be received in the channel of said female member, retaining ribs formed on the cylindrical portionsof said male memll berengageable with said shoulders, and said 'Inale member being further formed with n. continuous outstanding spacer flange cooperating with the internal surface of the? aforesaid-body. I v '0. 'In testimony" whereof I aflix my signature.

FRANK s. TRUsLER. 

